package idv.loveloser.dao;

import java.util.List;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A data access object (DAO) providing persistence and search support for
 * MdlQuestionAnswers entities. Transaction control of the save(), update() and
 * delete() operations can directly support Spring container-managed
 * transactions or they can be augmented to handle user-managed Spring
 * transactions. Each of these methods provides additional information for how
 * to configure it for the desired type of transaction control.
 * 
 * @see idv.loveloser.dao.MdlQuestionAnswers
 * @author MyEclipse Persistence Tools
 */

public class MdlQuestionAnswersDAO extends BaseHibernateDAO {
	private static final Logger log = LoggerFactory
			.getLogger(MdlQuestionAnswersDAO.class);
	// property constants
	public static final String QUESTION = "question";
	public static final String ANSWER = "answer";
	public static final String ANSWERFORMAT = "answerformat";
	public static final String FRACTION = "fraction";
	public static final String FEEDBACK = "feedback";
	public static final String FEEDBACKFORMAT = "feedbackformat";

	public void save(MdlQuestionAnswers transientInstance) {
		log.debug("saving MdlQuestionAnswers instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(MdlQuestionAnswers persistentInstance) {
		log.debug("deleting MdlQuestionAnswers instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public MdlQuestionAnswers findById(java.lang.Long id) {
		log.debug("getting MdlQuestionAnswers instance with id: " + id);
		try {
			MdlQuestionAnswers instance = (MdlQuestionAnswers) getSession()
					.get("idv.loveloser.dao.MdlQuestionAnswers", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(MdlQuestionAnswers instance) {
		log.debug("finding MdlQuestionAnswers instance by example");
		try {
			List results = getSession()
					.createCriteria("idv.loveloser.dao.MdlQuestionAnswers")
					.add(Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}

	public List findByProperty(String propertyName, Object value) {
		log.debug("finding MdlQuestionAnswers instance with property: "
				+ propertyName + ", value: " + value);
		try {
			String queryString = "from MdlQuestionAnswers as model where model."
					+ propertyName + "= ?";
			Query queryObject = getSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByQuestion(Object question) {
		return findByProperty(QUESTION, question);
	}

	public List findByAnswer(Object answer) {
		return findByProperty(ANSWER, answer);
	}

	public List findByAnswerformat(Object answerformat) {
		return findByProperty(ANSWERFORMAT, answerformat);
	}

	public List findByFraction(Object fraction) {
		return findByProperty(FRACTION, fraction);
	}

	public List findByFeedback(Object feedback) {
		return findByProperty(FEEDBACK, feedback);
	}

	public List findByFeedbackformat(Object feedbackformat) {
		return findByProperty(FEEDBACKFORMAT, feedbackformat);
	}

	public List findAll() {
		log.debug("finding all MdlQuestionAnswers instances");
		try {
			String queryString = "from MdlQuestionAnswers";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public MdlQuestionAnswers merge(MdlQuestionAnswers detachedInstance) {
		log.debug("merging MdlQuestionAnswers instance");
		try {
			MdlQuestionAnswers result = (MdlQuestionAnswers) getSession()
					.merge(detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(MdlQuestionAnswers instance) {
		log.debug("attaching dirty MdlQuestionAnswers instance");
		try {
			getSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(MdlQuestionAnswers instance) {
		log.debug("attaching clean MdlQuestionAnswers instance");
		try {
			getSession().lock(instance, LockMode.NONE);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}
}